Arope of negligible mass is stretched horizontally between two supports that are 6.67 m apart. When an object of weight
Posted: Tue May 17, 2022 8:26 pm
- Arope Of Negligible Mass Is Stretched Horizontally Between Two Supports That Are 6 67 M Apart When An Object Of Weight 1 (9.09 KiB) Viewed 35 times
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A 66 kg window cleaner uses a 12 kg ladder that is 6.3 m long. He places one end on the ground 3.1 m from a wall, rests the upper end against a cracked window, and climbs the ladder. He is 2.3 m up along the ladder when the window breaks. Neglect friction between the ladder and window and assume that the base of the ladder does not slip. When the window is on the verge of breaking, what are(a) the magnitude of the force on the window from the ladder. (b) the magnitude of the force on the ladder from the ground, and (c) the angle (relative to the horizontal) of that force on the ladder? (a) Number 166.10 Units N (b) Number 760824 Units N (c) Number 12.22838178 Units Idegrees
A horizontal aluminum rod 3.8 cm in diameter projects 6.9 cm from a wall. A 1400 kg object is suspended from the end of the rod. The shear modulus of aluminum is 3.0-1010 N/m2 Neglecting the rod's mass, find (a) the shear stress on the rod and (b) the vertical deflection of the end of the rod. (a) Number 12097539.10 Units N/m 2 or Pa (b) Number i 277309.79 Units m