1.85 kg box slides down a frictionless slope that is inclined at 40 above horizontal.FanormalFgyFgravity0NoteIf there is no friction, whichmeans the plane is smooth, thenthe force up the incline is zero.The net force down the incline orparallel to the plane is given asF = mgsin. Calculate the following:(i)(ii)(iii)(iv)(v)(vi)The weight of the box acting on the surface due to gravity.The force parallel to the plane.The force perpendicular to the plane.The normal reaction force or force perpendicular to planeThe acceleration of the box down the slope.The work done if the box covers a distance of 8.5 m.(vii) The power if it takes 17 s to travel 5 m

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des down a frictionless slope that is inclined at 40 above horizontal. normal gravity 0 Note If there is no friction, which means the plane is smooth, then the force up the incline is zero. The net force down the incline or parallel to the plane is given as F-mgsin.

des down a frictionless slope that is inclined at 40 above horizontal. normal gravity 0 Note If there is no friction, which means the plane is smooth, then the force up the incline is zero. The net force down the incline or parallel to the plane is given as F-mgsin.

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Concept explainers

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!

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Question

1.
85 kg box slides down a frictionless slope that is inclined at 40 above horizontal.
Fa
normal
Fgy
Fgravity
0
Note
If there is no friction, which
means the plane is smooth, then
the force up the incline is zero.
The net force down the incline or
parallel to the plane is given as
F = mgsin.

Calculate the following:
(i)
(ii)
(iii)
(iv)
(v)
(vi)
The weight of the box acting on the surface due to gravity.
The force parallel to the plane.
The force perpendicular to the plane.
The normal reaction force or force perpendicular to plane
The acceleration of the box down the slope.
The work done if the box covers a distance of 8.5 m.
(vii) The power if it takes 17 s to travel 5 m

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