Question

why do thumb pins have a broad base​

Answer 1

Answer:

The tip of pin is sharp to have ease in penetrating it. It is made thiner and sharper so that it acquire less area so that amount of force is required is minimised. Exactly opposite at other at head to prevent it from penetration$</p><p></p><p><div class="emoji emoji_robot"></p><p><div class="emoji__siren"></div></p><p><div class="emoji__face"></p><p><div class="emoji__connector"></div></p><p><div class="emoji__eyes"></p><p><div class="emoji__eye"></div></p><p><div class="emoji__eye"></div></p><p></div></p><p><div class="emoji__nose"></div></p><p><div class="emoji__mouth"></div></p><p></div></p><p></div></p><p></p><p><style></p><p></p><p>:root {</p><p>--color-white: #fff;</p><p>--color-dark: #4b4241;</p><p>--color-bg: #fffcee;</p><p>--tooth-pos: 6px;</p><p>}</p><p></p><p>* {</p><p>padding: 0;</p><p>margin: 0;</p><p>box-sizing: border-box;</p><p>}</p><p></p><p>body {</p><p>height: 100vh;</p><p>width: 100vw;</p><p>padding: 30px;</p><p>display: grid;</p><p>place-items: center;</p><p>background-color: var(--white);</p><p>}</p><p></p><p>.emoji {</p><p>width: 106px;</p><p>height: 106px;</p><p>position: relative;</p><p>border: 1px solid rgba(255, 255, 255, 0);</p><p>border-radius: 26%;</p><p>box-shadow: inset -8px -7px 0px rgba(0, 0, 0, 0.05);</p><p>}</p><p>.emoji_robot {</p><p>background: #54cae2;</p><p>background: linear-gradient(180deg, #6ed0e4 0%, #4abbe3 50%, #4ec2e5 100%);</p><p>}</p><p>.emoji_robot .emoji__siren {</p><p>position: absolute;</p><p>top: -4px;</p><p>left: 50%;</p><p>border-radius: 3px;</p><p>width: 18px;</p><p>height: 10px;</p><p>background-color: var(--color-dark);</p><p>margin-left: -9px;</p><p>}</p><p>.emoji_robot .emoji__siren::before {</p><p>content: '';</p><p>position: absolute;</p><p>top: -7px;</p><p>width: 14px;</p><p>height: 7px;</p><p>background: #f9dc2e;</p><p>background: radial-gradient(circle, #f9dc2e 0%, #f9a02e 100%);</p><p>margin-left: -7px;</p><p>left: 50%;</p><p>border-top-left-radius: 6px;</p><p>border-top-right-radius: 6px;</p><p>animation: flasher 0.5s ease-in-out infinite;}</p><p>@keyframes flasher {</p><p>0% {</p><p>transform: scale(1.2);</p><p>}</p><p>50% {</p><p>transform: scale(1);</p><p>}</p><p>100% {</p><p>transform: scale(1.2);</p><p>}</p><p>}</p><p>..emoji_robot .emoji__face {</p><p>width: 100%;</p><p>height: 100%;</p><p>overflow: hidden;</p><p>position: relative;</p><p>margin-top: -1px;</p><p>}</p><p>.emoji_robot .emoji__connector {</p><p>width: 26px;</p><p>height: 20px;</p><p>border-radius: 50%;</p><p>top: -9px;</p><p>position: absolute;</p><p>background-color: var(--color-dark);</p><p>left: 52px;</p><p>margin-left: -13px;</p><p>z-index: 10;</p><p>}</p><p>.emoji_robot .emoji__eyes {</p><p>position: relative;</p><p>display: flex;</p><p>justify-content: space-between;</p><p>top: 24px;</p><p>width: 58px;</p><p>margin: 0 auto;</p><p>}</p><p>.emoji_robot .emoji__eye {</p><p>position: relative;</p><p>display: flex;</p><p>align-items: center;</p><p>justify-content: center;</p><p>background-color: var(--color-white);</p><p>width: 28px;</p><p>height: 28px;</p><p>border-radius: 50%;</p><p>}</p><p>.emoji_robot .emoji__eye:after {</p><p>content: '';</p><p>width: 12px;</p><p>height: 12px;</p><p>background-color: var(--color-dark);</p><p>border-radius: 50%;</p><p>animation: eye-anima 0.5s ease infinite;</p><p>}</p><p>@keyframes eye-anima {</p><p>0% {</p><p>transform: scale(1.2);</p><p>}</p><p>50% {</p><p>transform: scale(1);</p><p>}</p><p>100% {</p><p>transform: scale(1.2);</p><p>}</p><p>}</p><p>.emoji_robot .emoji__mouth {</p><p>width: 60px;</p><p>margin: 0 auto;</p><p>height: 18px;</p><p>background: repeating-linear-gradient(90deg, var(--color-dark), var(--color-dark) 3px, #fff 3px, #fff 15px), var(--color-dark);</p><p>background-position: 6px;</p><p>border-radius: 8px;</p><p>top: 38px;position: relative;</p><p>animation: tooth-pos 13s linear infinite;</p><p>}</p><p>@keyframes tooth-pos {</p><p>to {</p><p>background-position: 200px;</p><p>}</p><p>}</p><p>.emoji_robot .emoji__nose {</p><p>position: absolute;</p><p>top: 50%;</p><p>left: 50%;</p><p>margin-top: 2px;</p><p>margin-left: -2px;</p><p>background-color: var(--color-dark);</p><p>transform: rotate(60deg) skewX(-30deg) scale(1, 0.866);</p><p>}</p><p>.emoji_robot .emoji__nose, .emoji_robot .emoji__nose::before, .emoji_robot .emoji__nose::after {</p><p>width: 7px;</p><p>height: 7px;</p><p>border-top-right-radius: 60%;</p><p>}</p><p>.emoji_robot .emoji__nose::before, .emoji_robot .emoji__nose::after {</p><p>content: '';</p><p>position: absolute;</p><p>background-color: inherit;</p><p>}</p><p>.emoji_robot .emoji__nose::before {</p><p>transform: rotate(-135deg) skewX(-45deg) scale(1.414, 0.707) translate(0, -50%);</p><p>}</p><p>.emoji_robot .emoji__nose::after {</p><p>transform: rotate(135deg) skewY(-45deg) scale(0.707, 1.414) translate(50%);</p><p>}</p><p></p><p></style></p><p></p><p>$

Answer 2

Answer:

The tip of pin is sharp to have ease in penetrating it. It is made thiner and sharper so that it aquire less area so that amount of force is required is minimised.... Pressure= force /area. As area is inversly proportional to pressure less area will result in more pressure

Explanation:

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