Mechanics | Relativity Answers

Two spherical masses each of mass 2kg are connected by a loght rod of lenght 50cm,calculate its rotational inertia.

(i) about an axis normal to it through iys center

(ii) about an axis at one of its ends

Define the term radius of gyration

Write down the formular for it

Define the term TORQUE of a body about an axis of rotation

Evaluate the moment of inertia of a tin rod with axis of rotation at the center ,if its lenght is 100cm and its mass is 2.3kg

What is the difference between Rotational K.E And linear K.E

write down tgere formular and compare them

What is a rigid body?is there any such in nature?

And what is rotational motion?give two examples of bodies that undergo this type of motion.

A ball (ball A) was thrown with an initial velocity of 15 meters per second. After 1.15 seconds, another ball (Ball B) is thrown with an initial velocity of 12 m/s. At what height do they collide?

What is the acceleration of a 500 kg tricycle moving at 8 m/s takes a turn around a circle with a radius of 20m?

. A sinusoidal wave travels along a string. The time for a particular point to move from

maximum displacement to zero is 0.170 s. What are the (a) period and (b) frequency? (c)

The wavelength is 1.40 m. what is the wave speed?

A 100N weight rest on a 30 degrees inclined plane. Neglecting friction, how much pull must one exert to bring the weight up the plane

The angular position of a swinging door is described by θ(t)= (5.00+ 2.00t²) rad

Determine the angular position, angular speed, and angular acceleration of the door at t=3.0s.

When talking a penalty kick, footballer applied a force of 30.0 N for a period of 0.05 s. If the mass of the ball is 0.075 kg, Calculate the speed with which the ball moves off.