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2020-05-03 21:54:34
00:29:23
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candle academy pakistan
Problem no 10
Tarzan swings on a vine of length 4m in a vertical circle under the influence of gravity. When the vine makes an angle of angle= 20° with the vertical, Tarzan has a speed of 5 ms. Find (a) his centripetal acceleration at this instant, (b) his tangential acceleration and (c) the resultant acceleration.
Problem no 11
From a heavy gun, a bullet is fired at a target 560m away with a velocity of 82m/s. (i) At what two possible angles must the gun be set to hit the target? (ii) What are the times of the flight for the two angles?
Problem no 12
A projectile is fired with a horizontal velocity of 300 m/s from the top of a cliff 100m high. (i) How long will it take to reach the ground? (ii) How far from the foot of the cliff will it strike the ground?
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