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Part A The 250-kg crate rests on the ground for which the coefficients of static and kinetic friction are u, = 0.5 and ui = 0.4, respectively. The winch delivers a horizontal towing force T to its cable at A which varies as shown in the graph. Originally the tension in the cable is zero. (Figure 1) Determine the speed of the crate when t = 4 s. Hint: First determine the force needed to begin moving the crat Express your answer to three significant figures and include the appropriate units. HÀ ? v = Value Units Figure < 1 of 1 > Submit Request Answer T (N) Provide Feedback 800 T = 400 t'/2 1 (s) AT

Part A The 250-kg crate rests on the ground for which the coefficients of static and kinetic friction are u, = 0.5 and ui = 0.4, respectively. The winch delivers a horizontal towing force T to its cable at A which varies as shown in the graph. Originally the tension in the cable is zero. (Figure 1) Determine the speed of the crate when t = 4 s. Hint: First determine the force needed to begin moving the crat Express your answer to three significant figures and include the appropriate units. HÀ ? v = Value Units Figure < 1 of 1 > Submit Request Answer T (N) Provide Feedback 800 T = 400 t'/2 1 (s) AT

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Part A The 250-kg crate rests on the ground for which the coefficients of static and kinetic friction are us = 0.5 and Hj. = 0.4, respectively. The winch delivers a horizontal towing force T to its cable at A which varies as shown in the graph. Originally the tension in the cable is zero. (Figure 1) Determine the speed of the crate when t = 4 s. Hint: First determine the force needed to begin moving the crate. Express your answer to three significant figures and include the appropriate units. μΑ ? Value Units Figure < 1 of 1 Submit Request Answer T (N) Provide Feedback 800 T= 400 t'/2 (s) 4. AT
Transcribed Image Text:Part A The 250-kg crate rests on the ground for which the coefficients of static and kinetic friction are us = 0.5 and Hj. = 0.4, respectively. The winch delivers a horizontal towing force T to its cable at A which varies as shown in the graph. Originally the tension in the cable is zero. (Figure 1) Determine the speed of the crate when t = 4 s. Hint: First determine the force needed to begin moving the crate. Express your answer to three significant figures and include the appropriate units. μΑ ? Value Units Figure < 1 of 1 Submit Request Answer T (N) Provide Feedback 800 T= 400 t'/2 (s) 4. AT
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