Mechanics | Relativity Answers

A solid sphere is rolling on a rough horizontal surface with linear speed v . It collides with a vertical wall elastically. Coefficient of friction on each surface is 0.5 .Find speed of sphere when it again starts rolling without slipping.

 Stacked Blocks F т, m2 no friction Consider two blocks that are resting one on top of the other. The lower block has mass = 2.2 frictionless table. The upper block has mass m kg. Suppose the coefficient of static friction between the two blocks is given by 4.8 kg and is resting m2= on a = 0.5 A force of magnitude F is applied as shown. What is Fmaz, the maximum value of F for which the upper block can be pushed horizontally together without slipping? Please give your answer in Newtons. so that the two blocks move

A 50.0 kg woman, riding on a 10 kg cart, is moving east at 5.0 m/s. The woman  jumps off the front of the cart and lands on the ground at 7.0 m/s eastward. What is  the final velocity of the cart?

If the velocity of a particle is zero, can its acceleration be nonzero? 

A body vibrating with a simple harmonic motion has a frequency of 4hz and Amplitude of 0.15m. Calculate the maximum value of acceleration and velocity.

b) the acceleration and velocity at a point 0.09 from the equilibrium position of motion

an object thrown up with a instant velocity 40m/s from grounds. assume the energy is conservative. find

a) maximum height

b)when where does Porential energy= Kinetic Energy if mass m=2kg

The period of a simple pendulum is 2.05s, What is the period of another simple pendulum which makes 300vibrations in the time it takes the first pendulum to make 200 vibration

A stone attached to the end of an inelastic string is whirled round in a circular path of radius 20cm. If the stone makes 15complete revolution in 5secs, calculate it's angular and linear velocity

Can the moment of force in a rotational motion be calculated by using both of these formulas: m.g.R(1-costheta) or m.g.R.theta

A pile drive hammer of mass 200kg falls freely through a distance of 8.2m to strike a pile of pass 800kg and drives it 105mm into the ground. The hammer does not rebound when driving the pile.

Determine the average resistance of the ground using the principle of conservation of energy.