自然科學
大學
順手解物理,救救gpa
拜託各位大大幫忙了!
計點廬生計衣 2 廚語 生汪和
When 1t 1s built on the Moon?》 (Hint: Use the formula: elastic energy denslty 三
o7/2Y)
2. (a) Find the acceleration of ml of the pulley system, assuming mi > m2 and the
Imasses of the rope and the two pulleys are negliglible. (Hint: It ls easier to do this by
usSlng the conservatlon of energy.“Put down an equation for energy conservatlon:
AK(CV)十AU(X) = 0, where x 1s 了e distance mi drops and vis the veloclty of mi (and
m2). “Then, differentliate the edquation with respect to time t.) (b) What is the
tenslon in the rope and what are the external forces Fi and F2 exerted by the ceiling to
hang the pulley system?
2 人上上
tenslon in the rope and what are the external forces Fi and F2 exerted by the ceiling to
hang the pulley system?
Pa
2
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