Which of the following statement(s) is (are) correct?
(A) If there is no friction, work needs to... VIDEO
Which of the following statement(s) is (are) correct?
(A) If there is no friction, work needs to be done to move a body up an inclined plane.
(B) If there were no friction, moving vehicles could not be stopped even by locking the brakes.
(C) As the angle of inclination is increased, the normal reaction on the body placed on it increases.
(D) A duster weighing \( 0.5 \mathrm{~kg} \) is pressed against a vertical board with a force of \( 11 \mathrm{~N} \). If the coefficient of friction is \( 0.5 \), the work done in rubbing it upward through a distance of \( 10 \mathrm{~cm} \) is \( 0.55 \mathrm{~J} \)
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