1. The initial velocity of a 1.68 kg block sliding down a frictionless inclined plane is found to be 1.34 m/s. Then 1.33 s later, it has a velocity of 6.45 m/s.
What is the angle of the plane with respect to the horizontal?

2. A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 23.6° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 64.4 kg, and the coefficient of kinetic friction between the skis and the snow is 0.145. Calculate the magnitude of the force that the tow bar exerts on the skier.

3. Two blocks of mass m = 11.0 kg each are fastened to the ceiling of an elevator
Find the tension in the top rope.

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1. The initial velocity of a 1.68 kg block sliding down a frictionless inclined plane is found to be 1.34 m/s. Then 1.33 s later, it has a velocity of 6.45 m/s. What is the angle of the plane with respect to the horizontal?

The force in the direction of the incline is
According to Newton's ...

Solution Summary

It provides detailed explanations of the various physics questions. The response was rated '5/5' by the student who posted the questions originally.

... As the sum of all the forces is not zero according to ... N or F_k=- 0.50*490=- 245 N Thus the net force acting on ... a=F/m=98/50=1.96 m/s^2 Hence acceleration of the ...

... 31 kg, calculate (a) the system's acceleration, and (b ... If the rope does not move, what force does each ... free body diagrams and clearly show directions of forces. ...

... Here, we've already calculated the two forces acting on ... using our kinematic equations knowing that the acceleration of the ... speed of 1.0 m/s. The force moves a ...

... b. Find the net force on each block... c. Find the magnitudes of the contact forces between the blocks... Newton's second law for constant mass: The acceleration a of ...

... 8) A 50-kg skier slides down a 10-degree incline with an acceleration of 1.2 m/s2. What is the strength of the frictional force acting on her (in Newtons)? ...

... If the body is moving against non-conservative forces like friction ... of energy (as there in on non-conservative force) Gain in ... (Considering acceleration to be ...

... energy methods, not the equations for constant acceleration.) (B) Now ... 2. What is a conservative force? Solution: All of the fundamental forces (gravity, electro ...