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A very urgent question
發問:
1. A trolley moves towards the right with acceleration a. A small block of mass m in front of the trolley. There are two forces F1(friction) and F2 (Normal reaction) acting the block by the trolley.a) If the acceleration of the trolley is furtherincreased, what are the effects on:i) the force F1:ii) the force F2. 顯示更多 1. A trolley moves towards the right with acceleration a. A small block of mass m in front of the trolley. There are two forces F1(friction) and F2 (Normal reaction) acting the block by the trolley. a) If the acceleration of the trolley is furtherincreased, what are the effects on: i) the force F1: ii) the force F2.
Your question means that the block is being pushed by the trolley to move forward, so that it hangs in mid air wihtout falling down. Under such situation, the force F1 is acting upward, whereas the force F2 is acting towards the right. If the above interpretation is correct, then we have, F1 = mg and F2 = ma It is clear to see that when a is increased, F2 increases accordingly. F1, which is independent of a, remains unchanged.
其他解答:
Is the Q be "A block moves towards the right with acceleration a?" If so, then F1 = ma and F2 = mg It is clear to see that when a is increased, F1 increases accordingly. F2, which is independent of a, remains unchanged.
A very urgent question
發問:
1. A trolley moves towards the right with acceleration a. A small block of mass m in front of the trolley. There are two forces F1(friction) and F2 (Normal reaction) acting the block by the trolley.a) If the acceleration of the trolley is furtherincreased, what are the effects on:i) the force F1:ii) the force F2. 顯示更多 1. A trolley moves towards the right with acceleration a. A small block of mass m in front of the trolley. There are two forces F1(friction) and F2 (Normal reaction) acting the block by the trolley. a) If the acceleration of the trolley is furtherincreased, what are the effects on: i) the force F1: ii) the force F2.
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最佳解答:Your question means that the block is being pushed by the trolley to move forward, so that it hangs in mid air wihtout falling down. Under such situation, the force F1 is acting upward, whereas the force F2 is acting towards the right. If the above interpretation is correct, then we have, F1 = mg and F2 = ma It is clear to see that when a is increased, F2 increases accordingly. F1, which is independent of a, remains unchanged.
其他解答:
Is the Q be "A block moves towards the right with acceleration a?" If so, then F1 = ma and F2 = mg It is clear to see that when a is increased, F1 increases accordingly. F2, which is independent of a, remains unchanged.
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