Question

Question 14: A mass of 2 kg is moving along a circular path of radius 1 m.
If the mass moves with 300 revolutions per minute, its kinetic energy would
be
| (a) 250r
| (b) 1001?
(c) 51²
V
(d) 0
intoto of come qases can be expressed as​

Answer 1

Answer:

Mass, m=2 kg,Radius,R=1 m

v=300 rpm=

150

300

rps=2 rps

The angular speed is given by

ω=2πv=2π×2=4πrads

−1

The linear speed is

v=ωR=(10πs

−1

)(1 m)=10πms

−1

Kinetic energy, K=

2

1

mv

2

K=

2

1

×(2 kg)(10πms

−1

)

2

=250r

2

J.