3. 1/3 points I Previous Answers SerPOPS 4.P030. My Notes Ask Your Two objects a

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3. 1/3 points I Previous Answers SerPOPS 4.P030. My Notes Ask Your Two objects are connected by a light string that passes over a frictionless pulley as shown in the figure below. Assume the incline is frictionless and take m1 = 2.00 kg, m2 = 7.00 kg, and = 52.5° mg (a) Draw free-body diagrams of both objects. Choose Fle no file selected This answer has not been graded yet (b) Find the magnitude of the accelerations of the objects. (3.86 ) (c) Find the tension in the string. m/s2 2.78 Your response differs from the correct answer by more than 10%. Double check your calculations. N (d) Find the speed of each object 1.50 s after being released from rest. m/s Need Help? Submit Answer Save ProgressPractice Another Version 4. 0/1 points I Previous Answers SerPOP5 4.P031 My Notes Ask Your A block is given an initial velocity of 2.00 m/s up a frictionless 17.0° incline. How far up the incline does the block slide before coming (momentarily) to rest? Your response differs from the correct answer by more than 100%. m Need Help? Resd It

Explanation / Answer

3)
c) Tension in the string, T = m1*g + m1*a

= 2*9.8 + 2*3.86

= 27.3 N

d) use, v = u + a*t

= 0 + 3.86*1.5

= 5.79 m/s

4)

use, acceleration of the block along the incline, a = -g*sin(17)

= -9.8*sin(17)

= -2.87 m/s^2

now use, vf^2 - vi^2 = 2*a*d

==> 0^2 - 2^2 = 2*(-2.87)*d

==> d = -2^2/(2*(-2.87))

= 0.697 m

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