Babe Ruth steps to the plate and casually points to left center field to indicat

Question

Babe Ruth steps to the plate and casually points to left center field to indicate the location of his next home run. The mighty Babe holds his bat across his shoulder, with one hand holding the small end of the bat. The bat is horizontal, and the distance from the small end of the bat to the shoulder is 25.5 cm . The bat has a mass of 1.30 kg and has a center of mass that is 69.0 cm from the small end of the bat.

(pare A)

Find the magnitude of the force exerted by the hand?

(part B)

Find the direction of the force exerted by the hand.

(1) force acts in the downward direction (2) force acts in the upward direction

(part C)

Find the magnitude of the force exerted by the shoulder.

(part D)

(1) force acts in the downward direction (2) force acts in the upward direction

Explanation / Answer

suppose hand exerts force F1 in downwards direction and shoulder exerts F2 in upwards direction,.

balancing moment (r x F ) about soulder point .,

25.5 x F1 - ( mg x (69- 25.5)) = 0

F1 = 43.5 x 1.30 x 9.81 / 25.5 = 21.76 N ............Ans(A)

B) downwrads

c) balancing forces in verticak direction,

F2 - mg - F1 = 0

F2 = 1.30x9.81 + 21.76 = 34.51 N

d) upwards

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