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1 answer:
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Answer:
Explanation:
Let the force at the support end is R and at the left end is F.
According to the equilibrium condition
F + R = 280 + 500
F + R = 780 .... (1)
Take moments about G.
F x 1.5 + R x 0.5 = 500 x 1.5
3F + R = 1500 .... (2)
Subtract equation (1) from equation (2), we get
2F = 1500 - 780
F = 360 N
R = 780 - 360
R = 420 N
(a) Force at support is 420 N
(b) force at the left end is 360 N.
Answer:
29.61 rpm.
Explanation:
Given,
student arm length, l = 67 cm
distance of the bucket, r = 35 m
Minimum angular speed of the bucket so, the water not fall can be calculated by equating centrifugal force with weight.
Now,
R = 67 + 35 = 102 cm = 1.02 m
minimum angular velocity is equal to 29.61 rpm.