our bodies, the masseter muscle in the jaw, as illustrated in the figure, is attached relatively far from the joint, enabling very large forces to be exerted by the back teeth. This is shown in the figure below, where a person is biting down on a bullet placed between the back teeth. (FM= 210 N  and rR = 4.1 cm.) (a) Using the information in the figure, calculate the magnitude of the force exerted by the teeth on the bullet.   (b) Calculate magnitude of the force on the joint.

Two identical, side-by-side springs with spring constant 240 N/m support a 2.00 kg hanging box. Each spring supports the same weight. By how much is each spring stretched?

A cord connected at one end to a block which can slide on an inclined plane has its other end wrapped around a cylinder resting in a depression at the top of the plane as shown in ( Figure 1). Determine the speed of the block after it has traveled 1.40 m along the plane, starting from rest. Assume there is no friction. Express your answer using two significant figures. Figure M = 33 kg R=0.20 m 58° 1 of 1 ΜΕ ΑΣΦ = 0.844 2+ Submit Previous Answers Request Answer ? m/s × Incorrect; Try Again; 2 attempts remaining Part B Determine the speed of the block after it has traveled 1.40 along the plane, starting from rest. Assume the coefficient of friction between all surfaces is -00310. Since the block is much lighter than the cylinder, ignore tension in the string when calculating the normal force on the cylinder. Do not ignore tension in the string when calculating the net torque (including friction) on the cylinder Express your answer using two significant figures. v= ΜΕ ΑΣΦ Submit Request…

A gymnast rises onto her toes, as shown in the picture on the right. The floor pushes up on the ball of her foot with a force of N=313 N. If 0=56.0°, what are FH the forces in her heel (TH) and ankle joint (T), and what is the angle o? Answers: TH=481 N; T,=761 N; b=20.7° N, 0. 4.25 cm 9.66 cm 5.