1. A bead slides without friction around a loop-the-loop. The bead is released from a height of 8.5 m from the bottom of the loop-the-loop which has a radius 3 m.The acceleration of gravity is 9.8 m/s. What speed is it at point a?
2. A bobsled slides down an ice track starting (at zero initial speed) from the top of a(n) 171
This problem set contains 15 multiple choice questions on motion along a straight line. First three questions are typed below.
50. A stone is released from a balloon that is descending at a constant speed of 10 m/s. Neglecting air resistance, after 20 s the speed of the stone is:
51. An object dropped from the window of
An observation satellite whose mass m= 4800 kg is to be put into a circular orbit around the earth at a height h= 322000 m above the surface in a precise north-south orbit. See attachment #1.
PART a. In this orbit, find the force of gravity exerted by the earth on the satellite.
PART b. Find the speed, v, and the period, T,
An astronaut on a strange new planet finds that she can jump up to a maximum height of 27. meters when her initial upward speed is 6.0
m/s. What is the magnitude of the acceleration of gravity on the planet?
a. 0.50 m/s^2
b. 0.67 m/s^2
c. 1.0 m/s^2
1. .5 m/s^2
Q. Bouncing a ball:
Let g be the acceleration of gravity near the Earth's surface. The acceleration of gravity near the surface of the Moon is (approximately) g/6. Using the law of conservation of energy, i.e. the principle of conservation of energy, solve the following.
(a) Suppose that a ball is dropped from 9 feet above
1) A stone is thrown vertically upward with a speed of 18.0m/s.
A.how fast is it moving when it reaches a height of 11.0m?
B.how long is it required to reach this height?
C.Why are there two answers to b.?
2) A falling stone takes 0.28s to travel past a window 2.2m tall. From what height above the top of
1) Imagine a 560 kg satellite in a circular orbit around the earth with a period of 4.8
(a) Determine the height of the satellite above the surface of the earth
(b) Determine the speed of the satellite in m/s.
(c) Determine the force of gravity on the satellite.
Mass of Earth = 6.0 x 1024 kg
Radius of Earth = 6.4 x