Mechanics | Relativity Answers

A student wanted to make a pendulum, the time period of which would be one second. He used a string of length L and found that that period was 1/2 seconds. A string of what length must have been used in order to get the desired period?

A speedboat is towing a paraglider at a constant speed and height
on the end of a light rope of length 30m, which makes an angle q
with the horizontal. The forces acting on the paraglider are the
vertical lift, L, the horizontal drag, D, his weight, W and the
tension in the rope, T.

How to draw a vector diagram to show the object is in equilibrium?

An elevator manufacturing company is stress-testing a new elevator in an airless test shaft. The elevator is traveling at an unknown velocity when the cable snaps. The elevator falls 2.50 meters before hitting the bottom of the shaft. The elevator was in free fall for 0.900 seconds. Determine its velocity when the cable snapped. As usual, up is the positive direction.

(7.00) A person throws a ball straight up. He releases the ball at a height of 1.75 m above the ground and with a velocity of 12.0 m/s. Ignore the effects of air resistance. (a) How long until the ball reaches its highest point? (b) How high above the ground does the ball go?

One ball is thrown upwards with an initial velocity of 20 m/s from the edge of a tall building. Three seconds later, a ball is dropped from the edge of the roof. Both balls hit the ground at the same time. How tall is the building?

What is the mass of Jupiter? ( Assume that Callisto's mass is negligible compared with that of Jupiter and use the modified version of Kepler's third law.

3.0cm, s^-1 + (9.8ms^-2 x 2.0ms)
Please can you help me with this as quick as possible and can the answer be in ms^-1 Thanks :)

What is the force, in Newtons, on a body of mass 3.0kg which is accelerating at 2.5m,s−2.

3.0ms^-1 + (9.8ms^-2 x 2.0s) please can you answer this, preferably with the answer having units of ms^-1

The gravitational field strength of Jupiter is 22.9 N/kg. An astronaut weighs 1200 N on earth. What will his wight on Jupiter be?