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8. Fig. 5.12 shows an estimated force-time graph for a base ball struck by a bat.as?B18000Force (N) ->Z12000vith aat the60001. Thee ball.on theC С2.5 301180 N)1.5 2Time (s)-Fig. 5.12eed of10 cmnail,ET) theIse.From this curve, determine (1) impulse delivered tothe ball (ii) force exerted on the ball (iii) themaximum force on the ball. |
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Answer» (i) : Area under the F-t graph GIVES the impulse DELIVERED to the ball. Impulse J= 1/2 ×18000×1.5 =13500 Ns(II) : Force exerted on the ball F= J/Δt = 13500 /1. =9000 N(iii) : MAXIMUM force exerted on the ball is 18000 N |
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