+1 vote
in Machine Dynamics by (34.3k points)
If the mass of the ball is 7.5 kg and the controlling force is 200N with an angular velocity of 100 rpm, find the radius.

(a) 24 cm

(b) 28 cm

(c) 30 cm

(d) 20 cm

I had been asked this question in examination.

This interesting question is from Controlling Force topic in portion Governors of Machine Dynamics

1 Answer

0 votes
by (38.6k points)
The correct choice is (a) 24 cm

To explain: F=m.ω^2.r

200 = 7.5 (2πx100/60)^2.r

Therefore r = 0.243m.

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