Explore BrainMass
Share

Newton's Laws

Classical Mechanics and Kinematics

I need some help with these questions with step-by-step explanations, look at attachment for full problem description: 63. A giant wheel, 40m in diameter, is fitted with a cage and platform on which a man can stand. The wheel rotates at such a speed that when the cage is at X (as shown) the force exerted by the man on the platf

Momentum and Impulse Formulas

An engine of the orbital maneuvering system (OMS) on a space shuttle exerts a force of over a time interval of (see attachment), exhausting a negligible mass of fuel relative to the shuttle's mass of (see attachment) . 1. What is the y component of the impulse of the force for this time interval of (see attachment)? 2. W

Value, Direction, and Balancing a Resultant Force

There are three people pushing on a box, as illustrated. Each of the three forces is 45 degrees from the x and y axes (there is no friction between the box and the floor). Picture of box is attached. The arrows are NOT to scale. a. Find the value and direction of the resultant force. b. What single force could be added to

Important information about Stress

A cylindrical specimen of steel with a cross section of 5 cm^2 is subjected to a tensile force of 800 N. What is the stress on the material?

Dragging box on the floor

Part 1. If I had a box with a mass (m) and dragged it across a level floor having a coefficient of kinetic friction uk by a rope that is being pulled upward at an angle (the symbol 0 with a one through it ) above the horizontal with a force of magnitude (F). In terms of M, uk, the symbol 0 with a line through it,l and g what

Block on inclined plane

Find the magnitude of the smallest horizontal force that would start the body moving (See attached for full question)

Statics Problem : Force Diagrams, Magnitudes of Forces, Static Friction

Two blocks, of masses m1 and m2, are connected by a model string. Both blocks lie on a plane that is inclined to the horizontal at an angle [symbol1]. The part of the plane supporting the block of mass m1 is smooth, so that there is no frictional force. The upper part of the plane is rough, as that coefficient of the static fric

Force Balance

Find the magnitude of the force and its direction along its line of action (See attached for full question)

Force Balance

Find the magnitude of the reaction exerted by the lower fixture on the horizontal bar (See attached for full question and diagram)

Calculating Normal force of Incline on the Block

My problem is that I need to determine the normal force of the incline on the block. The coefficient of static friction between the block and incline is mu^s = .295. I have determined that the minimum value of "F" is 18.49 N. I understand that "F" * sin (59.5) would be my answer to determine the normal force, yet I k

Normal Force

What is the normal force of the incline on the block? (See attachment).

Force and Free Body Diagrams

A person pushes a 13.0 kg lawn mower at constant speed with a force of 75.0 N directed along the handle, which is at an angle of = 48.0° to the horizontal (Fig. 4-38). Fig. 4-38. (a) Draw the free-body diagram showing all forces acting on the mower (b) Calculate the horizontal retarding force on the mower (N) (c) C

Force of Crosswind on a High Sided Truck

High sided trucks are very vulnerable to cross winds on freeways. Consider a truck with a total weight of 1.5 x 10^5 Newtons, a length 15m, width 2m, and with sides of height 8m. Assume the pressure exerted by wind at speed v, hitting a vertical surface normally is pv^2, where p is the density of air (=1.2kg.m^-3). (a) Calcul

Angle at which Compressive Force Becomes Zero

*Please see attachment for diagram. Question: The ball has a weight of 15 lb and is fixed to a rod having a negligible mass. If it is released from rest when theta = 0 deg., determine the angle theta at which the compressive force in the rod becomes zero.

Calculating magnitude of force

Please do not include your response in a .pdf format, but Word documents are okay. Thanks! Here is the actual problem: A 1000 kg car pushes a 2000 kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the car push against the ground with a force of 4500 N. (a) What is the magnit

Car on a banked curve

Q: A car rounds a banked curve where the radius of curvature on the road is R, the banking angle is A, and the coefficient of friction is F. Determine the range of speeds the car can have without slipping up or down the road.

Finding the resultant force - a crash test

The sensor in the torso of a crash-test dummy records the magnitude of the net external force acting on it. If the dummy is thrown forward with a force of 130.0 N while simultaneously being hit from the side with a force of 4500.0 N, what force will the sensor report? I would like the formula used to solve this problem a

Propulsive force of large caliber aircraft gun used by German Air Force in WW2

The largest caliber aircraft gun operated by German Air Force in WW2 was the 12.8cm flak 40. The weapon fired a 25.8kg shell with a muzzle speed of 880m/s. What propulsive force was necessary to attain the muzzle speed within the 6.00m barrel (assume the shell moves horizontally w/consistant acceleration and neglect friction).

Two springs have one end fixed on opposite sides of the box

SEE ATTACHMENT #1 for a diagram of initial and final conditions. In a box with vertical sides, two springs have one end fixed on opposite sides of the box. The free ends are distance S= .64 meters apart. When the free ends are pulled together and joined, find the change in the length of each spring. Their force constants

Reaction Force of a Uniform Ladder

An 8 m long, 12kg, uniform ladder leans against a frictionless wall making an angle of 65 degrees with the floor. A 75 kg person is able to climb to the 7 m mark on the ladder before it slips. What is the reaction force on the ground?