Applications of Newton’s Laws
PHXI05:LAWS OF MOTION

363160 A man weighing 60 \(kg\) is in a lift moving down with an acceleration of \(1.8\,m{s^{ - 1}}\). The force exerted by the floor on him is

1 \(588\,N\)
2 \(480\,N\)
3 \({\rm{zero}}\)
4 \(696\,N\)
PHXI05:LAWS OF MOTION

363161 Inside a railway car a plumb bob is suspended from the roof and a helium filled balloon is tied by a string to the floor of a car. When the rail and car accelerates to the right, then

1 Both the plumb bob and balloon move to the left
2 Both the plumb bob and balloon move to the right
3 Plumb bob moves to the left and the balloon moves to the right
4 Plumb bob moves to the right and the balloon moves to the left
PHXI05:LAWS OF MOTION

363162 A body of mass 50 \(kg\) is suspended using a spring balance inside a lift at rest. If the lift starts falling freely, the reading of the spring balance is

1 \( = 0\)
2 \( < 50\,kg\)
3 \( = 50\,kg\)
4 \( > 50\,kg\)
PHXI05:LAWS OF MOTION

363163 A lift is moving down with acceleration \(a\). A man in the lift drops a ball inside the lift. The acceleration of the ball as observed by the man in the lift and a man standing stationary on the ground are respectively

1 \(g - a,\;g - a\)
2 \(g,\;g\)
3 \(a,\;g\)
4 \(g - a,\;g\)
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PHXI05:LAWS OF MOTION

363160 A man weighing 60 \(kg\) is in a lift moving down with an acceleration of \(1.8\,m{s^{ - 1}}\). The force exerted by the floor on him is

1 \(588\,N\)
2 \(480\,N\)
3 \({\rm{zero}}\)
4 \(696\,N\)
PHXI05:LAWS OF MOTION

363161 Inside a railway car a plumb bob is suspended from the roof and a helium filled balloon is tied by a string to the floor of a car. When the rail and car accelerates to the right, then

1 Both the plumb bob and balloon move to the left
2 Both the plumb bob and balloon move to the right
3 Plumb bob moves to the left and the balloon moves to the right
4 Plumb bob moves to the right and the balloon moves to the left
PHXI05:LAWS OF MOTION

363162 A body of mass 50 \(kg\) is suspended using a spring balance inside a lift at rest. If the lift starts falling freely, the reading of the spring balance is

1 \( = 0\)
2 \( < 50\,kg\)
3 \( = 50\,kg\)
4 \( > 50\,kg\)
PHXI05:LAWS OF MOTION

363163 A lift is moving down with acceleration \(a\). A man in the lift drops a ball inside the lift. The acceleration of the ball as observed by the man in the lift and a man standing stationary on the ground are respectively

1 \(g - a,\;g - a\)
2 \(g,\;g\)
3 \(a,\;g\)
4 \(g - a,\;g\)
PHXI05:LAWS OF MOTION

363160 A man weighing 60 \(kg\) is in a lift moving down with an acceleration of \(1.8\,m{s^{ - 1}}\). The force exerted by the floor on him is

1 \(588\,N\)
2 \(480\,N\)
3 \({\rm{zero}}\)
4 \(696\,N\)
PHXI05:LAWS OF MOTION

363161 Inside a railway car a plumb bob is suspended from the roof and a helium filled balloon is tied by a string to the floor of a car. When the rail and car accelerates to the right, then

1 Both the plumb bob and balloon move to the left
2 Both the plumb bob and balloon move to the right
3 Plumb bob moves to the left and the balloon moves to the right
4 Plumb bob moves to the right and the balloon moves to the left
PHXI05:LAWS OF MOTION

363162 A body of mass 50 \(kg\) is suspended using a spring balance inside a lift at rest. If the lift starts falling freely, the reading of the spring balance is

1 \( = 0\)
2 \( < 50\,kg\)
3 \( = 50\,kg\)
4 \( > 50\,kg\)
PHXI05:LAWS OF MOTION

363163 A lift is moving down with acceleration \(a\). A man in the lift drops a ball inside the lift. The acceleration of the ball as observed by the man in the lift and a man standing stationary on the ground are respectively

1 \(g - a,\;g - a\)
2 \(g,\;g\)
3 \(a,\;g\)
4 \(g - a,\;g\)
PHXI05:LAWS OF MOTION

363160 A man weighing 60 \(kg\) is in a lift moving down with an acceleration of \(1.8\,m{s^{ - 1}}\). The force exerted by the floor on him is

1 \(588\,N\)
2 \(480\,N\)
3 \({\rm{zero}}\)
4 \(696\,N\)
PHXI05:LAWS OF MOTION

363161 Inside a railway car a plumb bob is suspended from the roof and a helium filled balloon is tied by a string to the floor of a car. When the rail and car accelerates to the right, then

1 Both the plumb bob and balloon move to the left
2 Both the plumb bob and balloon move to the right
3 Plumb bob moves to the left and the balloon moves to the right
4 Plumb bob moves to the right and the balloon moves to the left
PHXI05:LAWS OF MOTION

363162 A body of mass 50 \(kg\) is suspended using a spring balance inside a lift at rest. If the lift starts falling freely, the reading of the spring balance is

1 \( = 0\)
2 \( < 50\,kg\)
3 \( = 50\,kg\)
4 \( > 50\,kg\)
PHXI05:LAWS OF MOTION

363163 A lift is moving down with acceleration \(a\). A man in the lift drops a ball inside the lift. The acceleration of the ball as observed by the man in the lift and a man standing stationary on the ground are respectively

1 \(g - a,\;g - a\)
2 \(g,\;g\)
3 \(a,\;g\)
4 \(g - a,\;g\)