Question

A body of mass 2kg starts moving on a rough horizontal circular track of radius 1m with a constant angular acceleration of 1.5 rad/s^2. If the coefficient of friction between the body and the track is 0.5 then Calculate the time after which the body will start slipping.​

Answer 1

Explanation:

A body of mass 2 kg moving on a horizontal surface with speed v

i

=1ms

−1

enters a rough patch ranging from x = 0.5 m to x = 1.5 m. If the body comes to rest after crossing the patch, then find the retarding force on body.

w=Δk

E

f.s=

2

1

m(v

2

−u

2

)

−f×(1.5−0.5)=

2

1

×2×(0−1)

f=1N

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Answer 2

Explanation:

w=ΔkE

f.s=21m(v2−u2)

−f×(1.5−0.5)=21×2×(0−1)

f=1N