A 75-kg man starts climbing a ladder that leansIf the weight of theagainst a wall as shown in Fig.ladder is negligible, determine how far up the ladder theman can climb before the ladder starts to slip ifThe coefficient of friction is 0.25 at both surfaces.5 m60°

Draw the free body diagram of the ladder.

Answered: A 75-kg man starts climbing a ladder…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Hw.2 A (10 Kg mass) block is resting on a rough horizontal surface for which the coefficient of friction is (u-0.20). Determine the force Papplied to the block. EFx=0 5Pcos45-F=0 5P F=5Pcos45 45 EFy=0 N-5Psin45-98.1=D0 N=98.1+5Psin45 265 F=u N 5Pcos45=0.2*(98.1+5Psin45) P= F= N=
P (N) * 2. The force P is applied to the block m kg, which is stationary before the force is applied. Determine the magnitude and direction of the friction force f exerted by the horizontal surface on the block. m kg 30° H = 0.80 H = 0.60 %3D Figure 2. 25 kg m = .... ..... .... .. P = 245.25 newton ....... ..... .......
The friction coefficients between the wooden crate and the inclined plane are indicated in the drawing, respectively. Determine (a) the friction force F acting on the crate when force P is 200 N to the block at rest, (b) the force P needed to begin motion up the incline from rest, and (c) the friction force F acting on the block when force P is 600 N.
A 85-kg man starts climbing a ladder that leans against a wall as shown in Figure Q1. If the ladder is 5 m long and weighs 10 kg. Determine how far up the ladder the man can climb (in m) before the ladder starts to slip if the coefficient of friction is 0.25 at the top vertical surface and 0.4 at the bottom horizontal surface.
40 kg object is being pushed downwards at an angle of 32° with the horizontal. If the coefficient of static friction is 0.4 and dynamic friction 0.35. Determine (a) what must be the applied force P to overcome static friction and (b) what will be the required force P if the box is already moving. P 32° 40kg
A 60 Kg crate is resting on top of a 45 Kg crate as shown in figure below. The top crate is attached to a wall by a cord, and a rope attached to the bottom crate passes around two fixed pegs. The coefficient of friction between the two crates is 0.4; between the crate and the floor is 0.5; and between the rope and the pegs is 0.3. Determine the minimum force Pmin needed to cause move the bottom crate. 60 kg 45 kg
find the value of limiting friction force if an object of mass 10 kg is pulled in the horizontal surface of coefficient of friction of 0.2
A 75-kg man starts climbing a ladder that leans If the weight of the against a wall as shown in Fig. ladder is negligible, determine how far up the ladder the man can climb before the ladder starts to slip if The coefficient of friction at the bottom end of the lad- der is increased to 0.40 by placing a piece of rubber between the ladder and the floor. 5 m 60°
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A 75-kg man starts climbing a ladder that leans If the weight of the against a wall as shown in Fig. ladder is negligible, determine how far up the ladder the man can climb before the ladder starts to slip if The coefficient of friction is 0.25 at both surfaces. 5 m 60°