HOOKE'S LAW Introduction In physics, Hooke's Law is one of the fundamental principles governing how objects deform under external forces . Named after the 17th-century British physicist Robert Hooke, this law provides a crucial understanding of the behavior of elastic materials, such as springs and rubber bands. Whether stretching a rubber band or compressing a spring, Hooke's Law helps explain what happens when forces act on these materials. What is Hooke's Law: Hooke's Law states that the force F needed to extend or compress a spring by some distance x is proportional to that distance. Mathematically, it is expressed as: F= -kx Here k represents the spring constant, which is the measure of the stiffness of the spring, and x is the displacement from the displacement position. The negative sign indicates that the force exerted by the spring is in the opposite direction of the displacement. Understanding the Spring Constant: The spring constant k is a critical co...
ECAT/MDCAT English Reading Comprehension-I For NED,Mehran UET, GIKI, PIAS, NUST universities of Pakistan
READING COMPREHENSION ECAT AND MDCAT ENGLISH TEST 01 PASSAGE 01: When used for studies of learning and memory, the octopus is more interesting subject than the squid. Unlike the free swimming squid which relies exclusively on its eyes to guide it to tasty fish or crab, the octopus often feeds of the bottom of the sea. It not only uses its eyes but also tentacles to identify a likely meal. The brain of the octopus has two separate memory-storage areas one for visual memory and another for tactile memories. 1. How does squid find its food. a. By sight only b. By touch only c. Both by sight and by touch d. None of these 2. According to the passage, which of the following can describe the octopus a. Its brain is simpler than that of squid b. It can not took and touch at the same time ...