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發(fā)布時(shí)間：2023-11-21 17:33:55 編輯：小楊來(lái)源：犀牛國(guó)際教育
1. A car of mass 1200kg tows a caravan of mass 600kg.
The resistive forces acting on the car and caravan are
proportional to their individual weights and their sum equals 900N.
The vehicle accelerates at 2.0ms²on a flat road
(i) What force is exerted by the engine?
(ii) What is the tension in the tow bar?
(iii) What is the power being converted by the engine after 5s?
2. An object of mass m slides down
the smooth sloping
surface of a wedge of mass mz as shown in Fig.
The angle of the slope in θ=30°to
the horizontal,the wedge
sits on a smooth horizontal surface.
掃碼回復(fù)【BPHO】在線領(lǐng)取
想要申請(qǐng)國(guó)際名校理工學(xué)科專業(yè)，尤其是進(jìn)英國(guó)G5和美國(guó)藤校，數(shù)學(xué)和物理競(jìng)賽一定是必備的學(xué)術(shù)能力證明，這里給大家盤點(diǎn)：往屆錄取牛劍G5的學(xué)員都參加了哪些物理競(jìng)賽？
可以看到，數(shù)理化生基本上已經(jīng)成為背提標(biāo)配，根據(jù)這張表，我們梳理出了含金量高的國(guó)際物理競(jìng)賽：
