Questions
1
A wheel accelerates uniformly from rest to 2000 r.p.m. in 20 seconds. What is its angular acceleration?
Answer: 10.475 rad/s2
2
A wheel accelerates uniformly from rest to 2000 r.p.m. in 20 seconds. How many revolutions does the wheel make in attaining the speed of 2000 r.p.m.?
Answer: 333.4
3
The acceleration of a particle at any instant moving along a circular path in a direction tangential to that instant, is known
Answer: tangential component
4
The acceleration of a particle at any instant moving along a circular path in a direction normal to the tangent at that instant and directed towards the centre of the circular path, is known as
Answer: normal component
5
When a particle moves along a straight path, then the radius of curvature is
Answer: infinitely great
6
When a particle moves with a uniform velocity, then dv/dt will be
Answer: zero
7
A horizontal bar 1.5 metres long and of small cross-section rotates about vertical axis through one end. It accelerates uniformly from 1200 r.p.m. to 1500 r.p.m. in an interval of 5 seconds. What is the linear velocity at the beginning of the interval ?
Answer: 188.6 m/s
8
A horizontal bar 1.5 metres long and of small cross-section rotates about vertical axis through one end. It accelerates uniformly from 1200 r.p.m. to 1500 r.p.m. in an interval of 5 seconds. What is the linear velocity at end of the interval ?
Answer: 235.5 m/s
