IGCSE Physies 4 Aral Students 9
V1 Ch4 Moments and Equilibrium
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17. 2018 Jun P2 V2 QO7
7 A beam is pivoted at one end, as shown.
6x40
6x40 = uxd
240 -
पन
beam
40 cm
pivot
TE
6.ON
!
The beam weighs 6.0 N and its weight acts at a point X, 40 cm from the pivot.
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A force of 4.0 N is applied to the beam causing it to balance horizontally.
In which direction and where is the 4.0 N force applied?
A
downwards at 20 cm to the left of X

According to newton's second law, when the same force is applied to two objects of different masses, a the object with greater mass will experience a great acceleration, and the object with less mass will experience an even greater acceleration, b. the object with greater mass will experience a smaller acceleration, and the object with less mass will experience a greater acceleration, c. the object with greater mass will experience a greater acceleration, and the object with less mass will experience a smaller acceleration, d. the object with greater mass will experience a small acceleration, and the object with less mass will experience an even smaller acceleration.

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j

Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?