Respuesta :
Answer:
W = 0 J
Explanation:
given,
radius of the circle = R
Radial force acting = F
Work done by the radial force = ?
Motion of a particle is in tangential direction where as force acting is radially inward.
The angle between the force and displace is 90°
now,
Work done = F. s cos θ
W = F s cos 90°
we know, cos 90° = 0
hence, W = 0 J
The work done by the radial force is equal to zero.
The radial force acting on particle that moves halfway around a circle is zero.
Force act radially inward if particle is moving in a tangential direction. The work done by radial force can be calculate by the formula,
W = F. s cos θ
Where,
W - work done by radial force,
F - Force
s - displacement
θ - direction of applied force and displacement.
The angle between the applied force and displacement is 90°
W = F. s cos 90°
Since, cos 90° = 0
Thus,
W = 0 J
Therefore, the radial force acting on particle that moves halfway around a circle is zero.
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