For an 800 kg vehicle negotiating a 30° banked road at the maximum speed without skidding, with µₛ=0.2 and cos30°=0.87, the normal reaction i $s ______×10³$ N.
Options

Question

For an 800 kg vehicle negotiating a 30° banked road at the maximum speed without skidding, with µₛ=0.2 and cos30°=0.87, the normal reaction i s ______×10³ N.

G1 Physics · Accepted Answer

At the maximum-speed limiting condition friction acts down the bank. Resolving horizontal and vertical forces with θ=30° and µ=0.2 gives N≈10.2×10³ N. Hence option A.