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Q. A stunt man whose mass is 70 kg swings from the end of a 4.40-m long rope along the arc of a vertical circle. Assuming that he starts from rest as rope is horizontal, find out the tensions in the rope that are required to make him follow his circular path at each of the following points.
(a) At the beginning of his motion
(b) at a height of 1.5 m above the bottom of the circular arc
(c) at the bottom of the arc
An alpha particle (charge 2e) is sent at high speed toward a gold nucleus. The electric force acting on alpha particle is 91 N when it's 2.00 x 10^(exponent)-14m away from the gold nucleus What is the charge on gold nucleus, as a whole number mult..
The windshield of a speeding car hits a hovering insect. Consider the time interval from just before the car hits the insect to just after the impact. Which of the following are right.
After a day of testing race cars, you decide to take your own 1420 kg car onto the test track. While moving down the track at 10 m/s, you regularly accelerate to 32m/s in 10 s. What is the average net force that you have applied to car during the ..
What pull does each one exert if their resultant pull is 402-N straight upward.
A metal container, which has a mass of 9.4kg contains 18kg of water. A 1.8 kg piece of the same metal, initially at a temperature of 200°C, is dropped into the water. The container and the water initially have a temperature of 14.1°C and the final..
Find out the altitude of the plane
A ball with a horizontal speed of 1.25m/s rolls off a bench 1.00m/s above the floor. how long does it take to reach the floor.How far from a point on the floor directly below the edge of the bench would the ball land.
Racing drivers like to warm up the tyres of their car as soon as possible. One reason is that warm tyres grip the road better but the temperature also affects the pressure of the air into he tyres.
What is velocity curve between two times
A cardinal (Richmondena cardinalis) of mass 3.60×10-2 and a baseball of mass 0.146 have the same kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of baseball's momentum.
A new circus act is called the Texas Tumblers. Lovely Mary Belle swings from a trapeze, projects herself at an angle of 53, and is supposed to be caught by Joe Bob, whose hands are 6.10 above and 8.02 horizontally from her launch point. You can ignor..
The effectual coefficient of kinetic friction is 0.37. Compute the work done by the man on the piano.
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