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Q⁹ Calculate the mechanical energy, in J, for the mass M when the mass 2M hit the ground: A) 38.5 B) 47.6 C) 43.1 D) 34.0 and become at n

Q⁹ Calculate the mechanical energy, in J, for the mass M when the mass 2M hit the ground: A) 38.5 B) 47.6 C) 43.1 D) 34.0 and become at n

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Q7 A stone is thrown (v₁ = 20 m/s) from the ground with angle 60⁰ above the horizontal. At an instant the x component of the position is 10m what is the height of the stone, y, in m? A) 12.05 B) 6.96 C) 14.64 Q8 In the system, shown in the figure, assume that the surfaces are frictionless, if M = 2.1 kg, calculate the mechanical energy for the mass M before the system starts moving, in J? C) 600 C) 1.20 m 5m "a A) 42 B) 30 C) 34 D) 38 Q9 Calculate the mechanical energy, in J, for the mass M when the mass 2M hit the ground: A) 38.5 B) 47.6 C) 43.1 D) 34.0 M D) 12.32 1.5m 2m M Q10 A 3 kg is hanged vertically at the end of a spring, the spring is stretched 8 cm and become at rest, what is the spring constant, in N/m? A) 375 B) 500 Q11 The energy stored in the spring is, in J? A) 0.45 B) 0.75 Q12 A student used the experiment, shown in the figure, to find the kinetic friction coefficient, Hk between the mass m and the table (the table is flat). As a result, he found the relation between the normal force (n) and the kinetic friction force (f), as shown in the graph. calculate the kinetic friction coefficient (μ)? 60° 10m D) 1000 D) 0.90 n (N) 8 4 A) 4.00 B) 2.00 C) 0.50 D) 0.25 Q13 If m= 2kg and M = 7kg calculate the acceleration of the system, in m/s²? A) 7.22 B) 6.88 C) 6.43 D) 5.83 2M y 0.4m F, (N)
Transcribed Image Text:Q7 A stone is thrown (v₁ = 20 m/s) from the ground with angle 60⁰ above the horizontal. At an instant the x component of the position is 10m what is the height of the stone, y, in m? A) 12.05 B) 6.96 C) 14.64 Q8 In the system, shown in the figure, assume that the surfaces are frictionless, if M = 2.1 kg, calculate the mechanical energy for the mass M before the system starts moving, in J? C) 600 C) 1.20 m 5m "a A) 42 B) 30 C) 34 D) 38 Q9 Calculate the mechanical energy, in J, for the mass M when the mass 2M hit the ground: A) 38.5 B) 47.6 C) 43.1 D) 34.0 M D) 12.32 1.5m 2m M Q10 A 3 kg is hanged vertically at the end of a spring, the spring is stretched 8 cm and become at rest, what is the spring constant, in N/m? A) 375 B) 500 Q11 The energy stored in the spring is, in J? A) 0.45 B) 0.75 Q12 A student used the experiment, shown in the figure, to find the kinetic friction coefficient, Hk between the mass m and the table (the table is flat). As a result, he found the relation between the normal force (n) and the kinetic friction force (f), as shown in the graph. calculate the kinetic friction coefficient (μ)? 60° 10m D) 1000 D) 0.90 n (N) 8 4 A) 4.00 B) 2.00 C) 0.50 D) 0.25 Q13 If m= 2kg and M = 7kg calculate the acceleration of the system, in m/s²? A) 7.22 B) 6.88 C) 6.43 D) 5.83 2M y 0.4m F, (N)
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