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A cyclist going around a circular road of radius 10 m is observed to be bending inward 30° with vertical. Frictional force acting on the cyclist is ? (Given:g=10, mass of the cyclist is 90 kg) |
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Answer» ________________ ★ Gɪᴠᴇɴ ★
___________________☯ Tᴏ Fɪɴᴅ ☯
___________________✪ Sᴏʟᴜᴛɪᴏɴ ✪ → Rsinθ = FS ____(1) → Rcosθ = mg ____(2) DIVIDING equation (1) & (2) → tanθ = fs/mg → tan(30°) = fs/90×10 → fs = 900 tan(30°) → fs = 900 × 0.577 → fs = 519.6 ≈ 520N
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