A pulley is used to: change the direction of the tension force reduce the tension force change the tension force into a different type of force Amplify the magnitude of the tension force
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- If no net external force acts on an object which of the following is true Group of answer choices pick one answer only The forces are not equal and opposite It will change speed/velocity It will stop It will not start movingA 20-ton truck collides with a 1500-lb car and causes a lot of damage to the car. During the collision × the force that the truck exerts on the car is much greater than the force that the car exerts on the truck the car and the truck have the same magnitude acceleration. the force that the car exerts on the truck is slightly greater than the force that the truck exerts on the car the force that the car exerts on the truck is exactly equal to the force that the truck exerts on the car30 N 40 N 20 N A' 10 N The above figure indicates O a net force of 28.3 N along the diagonal CA O a net downward force of 20 N an equilibrium of the reactangular slab O a net leftward force of 20 N
- A student measures the ANGLE of the incline to be TOO SMALL. How will this effect the student's value of the coefficient of kinetic friction? The value will be too large The value will be too small The value will be unchangedGive Up? E 12 of 21 Questions Assignment Score: 46.7% O Hint Check Answer Resources 4 OT OU Attempts Correct Question 12 of 21 > O8 Question 80% 5 of o Attempts Two blocks with masses M and M, are connected by a Correct massless string that passes over a massless pulley as shown. O9 Question M1 has a mass of 2.25 kg and is on an incline of 0, = 45.5° 100% 1 of o Attempts Correct with coefficient of kinetic friction µ = 0.205. M, has a mass of 7.45 kg and is on an incline of 02 = 34.5° with coefficient M2 O 10 Question M1 97.5% of kinetic friction µz = 0.105. The two-block system is in 2 of o Attempts Correct motion with the block of mass M2 sliding down the ramp. Find the magnitude az of the acceleration of M2 down 11 Question O of o Attempts 0/100 e, the incline. Figure is not to scale. 12 Question 0% O of o Attempts az = m/s? 13 Question 48.8% 2 of o Attempts In Progress O 14 Question 100% 1 of o Attempts Correct 15 Question O of o Attempts 0% 16 Question 0% O of o Attempts 17…In the figure, the resultant of all forces in x-direction is equal to a 30° zero O ma mg sin 30 mg