During the collision ball X comes to rest and block Y starts moving towards point B. from position A and collides ELASTICALLY with a 2 kg block Y lying on a frictionless string making an angle of 30 to the vertical as shown in the diagram below. X swings a light inextensible string. Ball X is pulled to the left until it reaches point A with the A 2 kg steel ball X is connected to a beam that is 1,5 m above the ground by means of page.) horizontal surface. 30 1,5 m XY 5.1 State the principle of conservation of energy in words. 5.2 Calculate the: 5.2.1 Gravitational potential energy of the steel ball X at point A Show by means of a calculation that the speed of the steel ball X just before the collision with block Y 1,98 m-s is 5.2.2 5.3 What is the speed of block Y immediately after the collision?
During the collision ball X comes to rest and block Y starts moving towards point B. from position A and collides ELASTICALLY with a 2 kg block Y lying on a frictionless string making an angle of 30 to the vertical as shown in the diagram below. X swings a light inextensible string. Ball X is pulled to the left until it reaches point A with the A 2 kg steel ball X is connected to a beam that is 1,5 m above the ground by means of page.) horizontal surface. 30 1,5 m XY 5.1 State the principle of conservation of energy in words. 5.2 Calculate the: 5.2.1 Gravitational potential energy of the steel ball X at point A Show by means of a calculation that the speed of the steel ball X just before the collision with block Y 1,98 m-s is 5.2.2 5.3 What is the speed of block Y immediately after the collision?
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Transcribed Image Text:Use ENERGY PRINCIPLES to calculate the height h.
During the collision ball X comes to rest and block Y starts moving towards point B.
string making an angle of 30° to the vertical as shown in the diagram below. X swings
from position A and collides ELASTICALLY with a 2 kg block Y lying on a frictionless
A 2 kg steel ball X is connected to a beam that is 1,5 m above the ground by means of
a light inextensible string. Ball X is pulled to the left until it reaches point A with the
mew page.)
horizontal surface.
30
1,5 m
XY
5.1
State the principle of conservation of energy in words.
5.2
Calculate the:
5.2.1
Gravitational potential energy of the steel ball X at point A
Show by means of a calculation that the speed of the steel ball X just
before the collision with block Y 1,98 m-s is
5.2.2
5.3
What is the speed of block Y immediately after the collision?
Block Y moves from point B down a rough slope, inclined at 20° to the horizontal as
shown in the diagram below. A constant frictional force of 6 N acts on the block as it
moves from point B and reaches point C with a speed of 5 ms". Ignore the effects of
air friction.
Y.
20°
5.4
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