Answer to Question #187090 in Physics for siti fatisah

Question

A block of mass 4.0 kg is attached to a spring with a spring constant k = 550 N/m as shown in Figure 4. The block is pulled to a position 8.0 cm to the right of equilibrium by a person.

Find the maximum force required and work done by the person. [CO2, PO2] (4 Marks) Figure 4

(b) Team Avengers were fighting a group of villains in which they have superpowers to stop a bullet with their hands. From your observation, what is the possible force that the villains used to stop the firing bullet? Assume that the bullet mass is 15.0 g and it is travelling at 130 m/s as it penetrates the villains’ hands for about 2 cm. Bear in mind that the villains’ hand is quite flexible where the force deviated at angle of 10°. Give your answer to correct two significant figures. [CO2, PO2] (6 Marks)

Answer 1

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